# Honolua Bay water temperature Sea temperature at Honolua Bay is 27.6 °C (81.7 °F). - Location: Honolua Bay, USA - Timezone: Pacific/Honolulu - Source: Open-Meteo marine forecast (snapshot) - Generated at: 2026-09-22T19:23:29.112610-10:00 - Forecast page: https://snorkelforecast.com/usa/honolua-bay/ - HTML sea temperature: https://snorkelforecast.com/usa/honolua-bay/sea-temperature/ - Temperature is not a safety rating or snorkel score. - Guidance: Warm water - What to wear: Most people are comfortable in swimwear or a light rash guard. ## Monthly baseline - January: 25.3 °C (77.5 °F) - February: 24.6 °C (76.3 °F) - March: 24.6 °C (76.3 °F) - April: 25.1 °C (77.2 °F) - May: 25.4 °C (77.7 °F) - June: 26.1 °C (79.0 °F) - July: 26.5 °C (79.7 °F) - August: 26.9 °C (80.4 °F) - September: 27.1 °C (80.8 °F) - October: 26.8 °C (80.2 °F) - November: 26.3 °C (79.3 °F) - December: 25.8 °C (78.4 °F)